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Abstract: The measurement of Z boson production is presented as a method to determine the integrated luminosity of CMS data sets. The analysis uses proton-proton collision data, recorded by the CMS experiment at the CERN LHC in 2017 at a center-of-mass energy of 13 TeV . Events with Z bosons decaying into a pair of muons are selected. The total number of Z bosons produced in a fiducial volume is determined, together with the identification efficiencies and correlations from the same data set, in small intervals of 20 pb-1 of integrated luminosity, thus facilitating the efficiency and rate measurement as a function of time and instantaneous luminosity. Using the ratio of the efficiency-corrected numbers of Z bosons, the precisely measured integrated luminosity of one data set is used to determine the luminosity of another. For the first time, a full quantitative uncertainty analysis of the use of Z bosons for the integrated luminosity measurement is performed. The uncertainty in the extrapolation between two data sets, recorded in 2017 at low and high instantaneous luminosity, is less than 0.5%. We show that the Z boson rate measurement constitutes a precise method, complementary to traditional methods, with the potential to improve the measurement of the integrated luminosity.
Fuente: European Physical Journal C, 2024, 84(1), 26
Publisher: Springer New York LLC
Publication date: 01/01/2024
No. of pages: 28
Publication type: Article
DOI: 10.1140/epjc/s10052-023-12268-2
ISSN: 1434-6044,1434-6052
Publication Url: https://doi.org/10.1140/epjc/s10052-023-12268-2
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HAYRAPETYAN A.
SANDEEP BHOWMIK
SERGIO BLANCO FERNANDEZ
JAVIER ANDRES BROCHERO CIFUENTES
JOSE IBAN CABRILLO BARTOLOME
ALICIA CALDERON TAZON
JORGE DUARTE CAMPDERROS
MARCOS FERNANDEZ GARCIA
CELIA FERNANDEZ MADRAZO
GERVASIO GOMEZ GRAMUGLIO
CLARA LASAOSA GARCIA
CELSO MARTINEZ RIVERO
PABLO MARTINEZ RUIZ DEL ARBOL
FRANCISCO MATORRAS WEINIG
PABLO MATORRAS CUEVAS
EFREN NAVARRETE RAMOS
JONATAN PIEDRA GOMEZ
CEDRIC GERALD PRIEELS
LUCA SCODELLARO
IVAN VILA ALVAREZ
JESUS MANUEL VIZAN GARCIA
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